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Diffstat (limited to 'src/osmo-bts-sysmo/misc/sysmobts_mgr_temp.c')
-rw-r--r--src/osmo-bts-sysmo/misc/sysmobts_mgr_temp.c191
1 files changed, 191 insertions, 0 deletions
diff --git a/src/osmo-bts-sysmo/misc/sysmobts_mgr_temp.c b/src/osmo-bts-sysmo/misc/sysmobts_mgr_temp.c
new file mode 100644
index 0000000..217928a
--- /dev/null
+++ b/src/osmo-bts-sysmo/misc/sysmobts_mgr_temp.c
@@ -0,0 +1,191 @@
+/* Temperature control for SysmoBTS management daemon */
+
+/*
+ * (C) 2014 by Holger Hans Peter Freyther
+ *
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "misc/sysmobts_mgr.h"
+#include "misc/sysmobts_misc.h"
+
+#include <osmo-bts/logging.h>
+
+#include <osmocom/core/timer.h>
+
+static struct sysmobts_mgr_instance *s_mgr;
+static struct osmo_timer_list temp_ctrl_timer;
+
+static int next_state(enum sysmobts_temp_state current_state, int critical, int warning)
+{
+ int next_state = -1;
+ switch (current_state) {
+ case STATE_NORMAL:
+ if (critical)
+ next_state = STATE_CRITICAL;
+ else if (warning)
+ next_state = STATE_WARNING;
+ break;
+ case STATE_WARNING_HYST:
+ if (critical)
+ next_state = STATE_CRITICAL;
+ else if (warning)
+ next_state = STATE_WARNING;
+ else
+ next_state = STATE_NORMAL;
+ break;
+ case STATE_WARNING:
+ if (critical)
+ next_state = STATE_CRITICAL;
+ else if (!warning)
+ next_state = STATE_WARNING_HYST;
+ break;
+ case STATE_CRITICAL:
+ if (!critical && !warning)
+ next_state = STATE_WARNING;
+ break;
+ };
+
+ return next_state;
+}
+
+/**
+ * Go back to normal! Undo everything we did in the other states. For
+ * reducint the transmit power, the question is if we should slowly set
+ * it back to normal, let the BTS slowly increase it.. or handle it here
+ * as well?
+ */
+static void execute_normal_act(struct sysmobts_mgr_instance *manager)
+{
+ LOGP(DTEMP, LOGL_NOTICE, "System is back to normal temperature.\n");
+}
+
+static void execute_warning_act(struct sysmobts_mgr_instance *manager)
+{
+ LOGP(DTEMP, LOGL_NOTICE, "System has reached temperature warning.\n");
+}
+
+static void execute_critical_act(struct sysmobts_mgr_instance *manager)
+{
+ LOGP(DTEMP, LOGL_NOTICE, "System has reached critical warning.\n");
+}
+
+static void sysmobts_mgr_temp_handle(struct sysmobts_mgr_instance *manager,
+ int critical, int warning)
+{
+ int new_state = next_state(manager->state, critical, warning);
+
+ /* Nothing changed */
+ if (new_state < 0)
+ return;
+
+ manager->state = new_state;
+ switch (manager->state) {
+ case STATE_NORMAL:
+ execute_normal_act(manager);
+ break;
+ case STATE_WARNING_HYST:
+ /* do nothing? Maybe start to increase transmit power? */
+ break;
+ case STATE_WARNING:
+ execute_warning_act(manager);
+ break;
+ case STATE_CRITICAL:
+ execute_critical_act(manager);
+ break;
+ };
+}
+
+static void temp_ctrl_check()
+{
+ int rc;
+ int warn_thresh_passed = 0;
+ int crit_thresh_passed = 0;
+
+ LOGP(DTEMP, LOGL_DEBUG, "Going to check the temperature.\n");
+
+ /* Read the current digital temperature */
+ rc = sysmobts_temp_get(SYSMOBTS_TEMP_DIGITAL, SYSMOBTS_TEMP_INPUT);
+ if (rc < 0) {
+ LOGP(DTEMP, LOGL_ERROR,
+ "Failed to read the digital temperature. rc=%d\n", rc);
+ warn_thresh_passed = crit_thresh_passed = 1;
+ } else {
+ int temp = rc / 1000;
+ if (temp > s_mgr->digital_limit.thresh_warn)
+ warn_thresh_passed = 1;
+ if (temp > s_mgr->digital_limit.thresh_crit)
+ crit_thresh_passed = 1;
+ LOGP(DTEMP, LOGL_DEBUG, "Digital temperature is: %d\n", temp);
+ }
+
+ /* Read the current RF temperature */
+ rc = sysmobts_temp_get(SYSMOBTS_TEMP_RF, SYSMOBTS_TEMP_INPUT);
+ if (rc < 0) {
+ LOGP(DTEMP, LOGL_ERROR,
+ "Failed to read the RF temperature. rc=%d\n", rc);
+ warn_thresh_passed = crit_thresh_passed = 1;
+ } else {
+ int temp = rc / 1000;
+ if (temp > s_mgr->rf_limit.thresh_warn)
+ warn_thresh_passed = 1;
+ if (temp > s_mgr->rf_limit.thresh_crit)
+ crit_thresh_passed = 1;
+ LOGP(DTEMP, LOGL_DEBUG, "RF temperature is: %d\n", temp);
+ }
+
+ if (is_sbts2050_master()) {
+ int temp_pa, temp_board;
+
+ rc = sbts2050_uc_check_temp(&temp_pa, &temp_board);
+ if (rc != 0) {
+ /* XXX what do here? */
+ LOGP(DTEMP, LOGL_ERROR,
+ "Failed to read the temperature! Reboot?!\n");
+ warn_thresh_passed = 1;
+ crit_thresh_passed = 1;
+ } else {
+ LOGP(DTEMP, LOGL_DEBUG, "SBTS2050 board(%d) PA(%d)\n",
+ temp_board, temp_pa);
+ if (temp_pa > s_mgr->pa_limit.thresh_warn)
+ warn_thresh_passed = 1;
+ if (temp_pa > s_mgr->pa_limit.thresh_crit)
+ crit_thresh_passed = 1;
+ if (temp_board > s_mgr->board_limit.thresh_warn)
+ warn_thresh_passed = 1;
+ if (temp_board > s_mgr->board_limit.thresh_crit)
+ crit_thresh_passed = 1;
+ }
+ }
+
+ sysmobts_mgr_temp_handle(s_mgr, crit_thresh_passed, warn_thresh_passed);
+}
+
+static void temp_ctrl_check_cb(void *unused)
+{
+ temp_ctrl_check();
+ /* Check every two minutes? XXX make it configurable! */
+ osmo_timer_schedule(&temp_ctrl_timer, 2 * 60, 0);
+}
+
+int sysmobts_mgr_temp_init(struct sysmobts_mgr_instance *mgr)
+{
+ s_mgr = mgr;
+ temp_ctrl_timer.cb = temp_ctrl_check_cb;
+ temp_ctrl_check_cb(NULL);
+ return 0;
+}